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Firefighting
Fire fighting is the act of carrying out procedures to extinguish an unwanted fire more...
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In all but the most trivial cases, knowledge and expertise are necessary for successful and safe fire-fighting.
Historically, fire scientists created a graphical representation detailing the three elements fire needs to start (fire triangle). In recent years, one more point has been added, creating the fire tetrahedron.
The three elements needed for the initial start of combustion (a form of oxidation; see the article on combustion) are:
- combustible matter (fuel): paper, wood, gasoline, oil, gas, etc.;
- a combustive agent, i.e. an oxidant, usually the oxygen of the air;
- activation energy: heat, spark (electricity), etc.
- The fourth element is a chemical chain reaction needed to sustain fire.
To extinguish a fire, it is necessary to remove either the fuel or the combustive agent (once started, the fire requires no further activation). Once the fire has been suppressed, it is necessary to reduce the temperature of the surrounding objects so the fire does not start again.
Risks of a fire
The obvious risk is heat. Even without contact with the flames, there are a number of comparably serious risks: burns from infrared radiation (radiated heat, like a domestic grill), contact with a hot object, hot gases (e.g., air), steam produced by spraying, and hot or toxic smoke. Firefighters are normally equipped with personal protective equipment (PPE) that includes fire-resistant clothing and helmets that slow down the diffusion of the heat towards the skin.
Read more at Wikipedia.org
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 |  |  | Houston Sta.-21 "Pride of Main St." fire patch $3.25 |  |
 | Houston Sta.-13 "Lucky 13" old style fire patch $3.25 |  |
 |  |  | Top Gun F14 Tomcat Us Navy Fighter Weapons Patch $0.99 |  |
 | Massachusetts, East Longmeadow Fire Dept Patch $5.50 |  |
 |  |  | Texas? City Of Kingsville Fire Department Patch $1.00 |  |
 | Bald Mt. (Rondaxe) Mountain Fire Tower Post Card $3.00 |  |
 |  |  | "Fdny In Memory" Window Decal. 9/11 Never Forget! $0.99 |  |
 | Lake Conroe, Tx Sta.-32 "Train" fire patch $3.00 |  |
 |  |  | Houston Sta.-8 "Downtown Heat" fire patch $3.25 |  |
 | New 3X5Ft Firefighters Firefighter Flag Banner f |  |
 |  |  | Kentucky, Lexington Fire Dept Cloth Patch $5.00 |  |
 | "Never Forget 9/11" 4" Window Decal. $0.99 |  |
 |  |  | Houston Sta.-10 "Fire - Dragon" fire patch $3.25 |  |
 | New York, Mohegan Lake Fire Rescue Patch $3.00 |  |
 |  |  | Houston Sta.-9 "Tried & True" fire patch $3.25 |  |
 | "Never Forget 9/11" Huge 6" Window Decal. $0.99 |  |
 |  |  | Houston Sta.-11 "T.C. Jesters" fire patch $3.25 |  |
 | Certified Wildland Firefighter ll (2) Fire Patch $10.00 |  |
 |  |  | Houston Sta.-20 "Magnolia Park" fire patch $3.25 |  |
 | City Of Sonora Est. 1852 Fire Rescure Patch $0.99 |  |
 |  |  | New 3X5Ft Fire Department Dept. Flag Banner f |  |
 | Utah, Springville, Suntana Raceway Fire Rescue Patch $3.00 |  |
 |  |  | Houston Sta.-7 "Taz - 3rd Ward" fire patch $3.25 |  |
 | Uc6 Police Fire Security Led Strobe Light |  |
 |  |  | Louisiana Greater Baton Rouge Airport Fire Rescue Patch $4.00 |  |
 | Houston Station -12 fire patch $3.25 |  |
 |  |  | Fire Department Dive Team Decal / Sticker |  |
 | Harwinton Fire Marshal Inc.1737 Fire Rescure Patch $0.99 |  |
 |  |  | Porter, Tx "A" Shift fire patch $3.25 |  |
 | Hookerton Fire Dept. Greene Nc County Patch $0.99 |  |
 |  |  | Fire Fighter, Albuquerque Nm. Fire Department $9.95 |  |
 | Firefighter Stickers - Boyfriend Saves Lives Fd 5"x5" |  |
 |  |  | Emergency First Response Ems Emt Fire Decal / Sticker |  |
 | New York, City Of Johnstown Fire Dept Patch $3.50 |  |
 |  |  | Lake Conroe, Tx Sta.-31 "Gator" fire patch $3.00 |  |
 | Maltese Cross With Flag Fire Dept Challenge Coin 57022 $10.60 |  |
 |  |  | Storey Co. 6 Mile Cyn Nevada Fire Dept. Patch |  |
 | University Of Nevada, Reno Fire Science Academy patch $6.99 |  |
 |  |  | Indiana? City Of Noblesville Fire Dept. Patch $1.00 |  |
 | Dual Led Police Light Fire Ems Led Strobe Light |  |
 |  |  | Houston Sta.-11 / Heavy Rescue fire patch $3.25 |  |
 | Houston Sta.-6 "6th Ward" fire patch $3.25 |  |
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Prices current as of last update, 07/30/10 2:59am.
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| | See also...
Alarms, Bells, Firefighting
Badges: Obsolete, Firefighting
Belts, Belt Buckles, Firefighting
Bunker, Turnout Gear, Firefighting
Extinguishers, Firefighting
Gear Bags, Duffles, Firefighting
Hats, Caps, Firefighting
Helmets, Firefighting
Hoses, Nozzles, Firefighting
Lights, Firefighting
Mugs, Cups, Plates, Firefighting
Other Items, Firefighting
Patches, Firefighting
Photos, Firefighting
Pins, Buttons, Firefighting
Posters, Prints, Firefighting
Shirts, Firefighting
Signs, Plaques, Firefighting
Statues, Figures, Firefighting
Stickers, Decals, Firefighting
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